import { TestBed } from '@angular/core/testing';
/**
 * Define the structure of the options object passed to `configureTestBed`
 */
export declare type TestBedCompilerOptions = Partial<{
    providers: any[];
    useJit: boolean;
    preserveWhitespaces: boolean;
}>;
/**
 * Define the structure of the function passed to `configureTestBed`
 *
 * @param testBed - The TestBed instance
 */
export declare type ConfigureTestBedFn = (testBed: typeof TestBed) => void;
/**
 * Create an instance of the TestBed and compile components
 *
 * @param configureFn - The configuration function for the TestBed
 * @param compilerOptions
 * @returns A promise-wrapped TestBed instance
 */
export declare function configureTestBedWhitespace(configureFn: ConfigureTestBedFn, compilerOptions?: TestBedCompilerOptions): Promise<typeof TestBed>;